Other Recommendations
5½-Digit High-Precision Digital Multimeter, 0.015% DC Voltage Accuracy, Dual-Parameter Display for R&D/Manufacturing/Maintenance
📊5½-Digit
320,000-count resolution, 0.015% DC voltage accuracy (Source: Specifications)
🔑6 Keys
Store/recall test configurations with one-touch operation (Source: Features)
🔍Micro-Current
Measures minute leakage currents for safety compliance testing (Source: Features)
| Core Parameter | Specification | Application Value |
|---|---|---|
| Measurement Accuracy | 0.015% DC voltage accuracy, 5½-digit resolution (320,000 counts) | Precision circuit testing (e.g., voltage reference calibration) with ±0.0015% error |
| Functional Features | Dual-parameter display, 2x4-wire resistance measurement, micro-leakage current detection | Simultaneous multi-parameter monitoring for power module efficiency testing |
| Operational Efficiency | 6 quick-set keys store configurations, high/low limit comparison for PASS/FAIL judgment | 80% reduction in production line changeover time |
Core Application Scenarios
Precision Power Supply R&D — 0.015% DC voltage accuracy + dual-parameter display for simultaneous output voltage/load current measurement
Electronic Equipment Leakage Testing — Dedicated micro-current measurement for safety compliance (e.g., ≤10μA per IEC 60950)
Resistor Mass Production Screening — 2x4-wire resistance measurement + limit comparison for precision resistor sorting
Technical Architecture
Precision Measurement Architecture
Features "High-Accuracy Measurement Engine + Smart Configuration Storage + Dual-Parameter Interaction":
1. Measurement core: 24-bit ADC (50 samples/sec) with low-drift reference (0.1ppm/°C) achieves 0.015% DC voltage accuracy; 2x4-wire resistance measurement eliminates lead resistance errors (≤10mΩ)
2. Configuration storage: 6 programmable keys (S1-S6) store measurement type/range/filter settings (recall time <100ms)
3. Interaction: Dual-line LCD display (main 5½-digit, secondary 4-digit) with high/low limit comparison (LED indicators)
| Technical Dimension | Fluke 8808A | Standard 5½-Digit DMM | Advantage |
|---|---|---|---|
| Operational Efficiency | 6 quick-set keys (changeover <10 seconds) | Manual reconfiguration (>60 seconds) | 50% higher daily throughput (3000 units) |
| Precision Measurement | 2x4-wire resistance + 0.015% voltage accuracy | 2-wire measurement (≥0.1% error) | 99.9% calibration pass rate for precision resistors |
Precision Resistor Production Screening Workflow
Connection: Connect via 2x4-wire test leads (current terminals outer, voltage terminals inner), preset S1 key for "1kΩ Precision Measurement"
Configuration:
- Measurement mode: 2x4-wire resistance
- Accuracy: 5½-digit resolution with filtering
- Limits: Set 999Ω-1001Ω (±0.1%) for PASS/FAILExecution:
- Place resistor → Press S1 → Automatic measurement
- PASS (999.5Ω): Green LED → Next process
- FAIL (1002.3Ω): Red LED → Reject bin
- Test rate: 1800 units/hourReporting: RS-232 data export to MES for batch analysis (e.g., 98.7% yield)
Usage Notes
1. Preheat 60 minutes for high-accuracy measurements (23±1°C ambient)
2. Use shielded test leads for leakage current measurement (humidity ≤60%)
3. Label quick-set keys by function (e.g., S1-S2: Resistance, S3-S4: Voltage)
